Disconnected but Wrongful billed

MultiChoice has been a headache since 14 January 2023 when they decided to disconnect my extra view decoder, when I contacted them they said when I phoned on the 4th of January for disconnecting a decoder that was no longer in use they made a mistake to bill the extra view decoder it’s own subscription and will reverse the amount billed. To my surprise when I tried to pay on the 3rd February I could not as I was expected to pay that incorrectly billed subscription. From Monday 6 February up to today 10 February i t has not been sorted as I am sent from pillar to post, instead yesterday they decided to disconnect although I paid R970 to cover my subscription and the reconnection fee. Your assistance will be greatly appreciated as feel I have been cheated by *********** agents at MultiChoice.